diff options
| -rw-r--r-- | .fossil-settings/ignore-glob | 2 | ||||
| -rw-r--r-- | Makefile | 30 | ||||
| -rw-r--r-- | src/c_bsdsetsid.S | 24 |
3 files changed, 41 insertions, 15 deletions
diff --git a/.fossil-settings/ignore-glob b/.fossil-settings/ignore-glob index f43e489..b37143a 100644 --- a/.fossil-settings/ignore-glob +++ b/.fossil-settings/ignore-glob @@ -1,5 +1,5 @@ bsdsetsid -.ccls +.ccls* .ccls-cache .clang_complete git @@ -26,12 +26,35 @@ SRCS := ${SRCS_DIR}c_bsdsetsid.S OBJS = ${SRCS:.S=.o} -AS := yasm -ASFLAGS := -felf64 +AS = yasm +ASFLAGS = -felf64 ASFLAGS += -pgas +ASFLAGS += -gdwarf2 + +CC = cc LD := ld LDFLAGS := -melf_x86_64 +LDFLAGS += --eh-frame-hdr +LDFLAGS += -dynamic-linker +LDFLAGS += /libexec/ld-elf.so.1 +LDFLAGS += --hash-style=both +LDFLAGS += --enable-new-dtags +LDPOST := /usr/lib/crt1.o +LDPOST += /usr/lib/crti.o +LDPOST += /usr/lib/crtbegin.o +LDPOST += -L/usr/lib +LDPOST += -lgcc +LDPOST += --as-needed +LDPOST += -lgcc_s +LDPOST += --no-as-needed +LDPOST += -lc +LDPOST += -lgcc +LDPOST += --as-needed +LDPOST += -lgcc_s +LDPOST += --no-as-needed +LDPOST += /usr/lib/crtend.o +LDPOST += /usr/lib/crtn.o NAME := bsdsetsid @@ -43,7 +66,8 @@ RM := rm -f ${AS} ${ASFLAGS} -o ${.TARGET} ${.IMPSRC} ${NAME}: ${OBJS} - ${LD} ${LDFLAGS} -o ${.TARGET} ${.ALLSRC} + ${LD} ${LDFLAGS} -o ${.TARGET} ${.ALLSRC} ${LDPOST} + # ${CC} -v -o ${.TARGET} ${.ALLSRC} all: ${NAME} diff --git a/src/c_bsdsetsid.S b/src/c_bsdsetsid.S index d9b1067..4d202dd 100644 --- a/src/c_bsdsetsid.S +++ b/src/c_bsdsetsid.S @@ -1,19 +1,21 @@ -.data -str: - .asciz "a string\n" - .text -.globl _start - -_start: - jmp c_main +.globl main c_main: movq $0x1, %rdi leaq str, %rsi - movq $0x9, %rdx - movq $0x4, %rax + movq $0xa, %rdx + movb $0x4, %al syscall + retq + +main: + xorq %rax, %rax + callq c_main + xorq %rax, %rax xorq %rdi, %rdi - movq $0x1, %rax + movb $0x1, %al syscall + +.data + str: .asciz "a string\n" |